The performance of nitrogen and organic carbon removal in a single reactor (R1) operating with A. faecalis strain NR aerobically was assessed. Under 150 mg/L influent NH4+-N, 91.3%, 71.4% and 90.9% of NH4+-N, TN and TOC were removed, presenting much higher efficiency than a control bioreactor inoculating activated sludge (R0). The amoA gene expression from strain NR in R1 was 7.8 times higher than that from activated sludge in R0, demonstrating the role of strain NR in removing NH4+. The analysis of microbial community composition revealed that strain NR was the dominant species and outcompeted ammonium oxidizing bacterium (AOB) under high organic carbon as well as ammonium. Simultaneous ammonium and organic carbon removal still maintained for a long-term operation with NH4+-N loadings of 300 and 450 mg/L in R1. Nitrogen balance showed that stripped NH3 only occupied a few percentages and aerobic denitrification played a significant role in nitrogen removal.

中文翻译：

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使用粪便曲霉菌株NR好氧评估单个反应器中氮和有机碳的去除性能。

评估了在有氧粪农杆菌操作的单个反应器（R1）中氮和有机碳的去除性能。在150 mg / L的进水NH4 + -N下，去除了91.3％，71.4％和90.9％的NH4 + -N，TN和TOC，其效率比接种活性污泥（R0）的对照生物反应器高得多。R1中NR菌株的amoA基因表达比R0中活性污泥的amoA基因表达高7.8倍，表明NR菌株在去除NH4 +中的作用。对微生物群落组成的分析表明，在高有机碳和铵盐条件下，NR菌株是优势菌种，其竞争能力超过了铵氧化菌（AOB）。R1中的NH4 + -N负载量分别为300和450 mg / L时，仍可长期运行同时去除铵和有机碳。